140401252 has 6 divisors (see below), whose sum is σ = 245702198. Its totient is φ = 70200624.

The previous prime is 140401243. The next prime is 140401253. The reversal of 140401252 is 252104041.

It can be written as a sum of positive squares in only one way, i.e., 125081856 + 15319396 = 11184^2 + 3914^2 .

It is not an unprimeable number, because it can be changed into a prime (140401253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17550153 + ... + 17550160.

Almost surely, 2^140401252 is an apocalyptic number.

It is an amenable number.

140401252 is a deficient number, since it is larger than the sum of its proper divisors (105300946).

140401252 is a wasteful number, since it uses less digits than its factorization.

140401252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35100317 (or 35100315 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 140401252 is about 11849.1034259981. The cubic root of 140401252 is about 519.7450081164.

Adding to 140401252 its reverse (252104041), we get a palindrome (392505293).

The spelling of 140401252 in words is "one hundred forty million, four hundred one thousand, two hundred fifty-two".